/*
 * Copyright (C) 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License. You may obtain
 * a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package com.facebook.swift.service.guice;

import com.facebook.swift.service.ThriftClientEventHandler;
import com.google.inject.Binder;
import com.google.inject.Key;
import com.google.inject.multibindings.Multibinder;

import static com.google.inject.multibindings.Multibinder.newSetBinder;

public class ClientEventHandlersBinder
{
    public static ClientEventHandlersBinder clientEventHandlersBinder(Binder binder)
    {
        return new ClientEventHandlersBinder(newSetBinder(binder, ThriftClientEventHandler.class));
    }

    private final Multibinder<ThriftClientEventHandler> binder;

    public ClientEventHandlersBinder(Multibinder<ThriftClientEventHandler> binder)
    {
        this.binder = binder;
    }

    public ClientEventHandlersBinder addHandler(Class<? extends ThriftClientEventHandler> cls)
    {
        binder.addBinding().to(cls);
        return this;
    }

    public ClientEventHandlersBinder addHandler(Key<? extends ThriftClientEventHandler> key)
    {
        binder.addBinding().to(key);
        return this;
    }

    public ClientEventHandlersBinder addHandler(ThriftClientEventHandler handler)
    {
        binder.addBinding().toInstance(handler);
        return this;
    }
}
